A_He in the AR solar wind with higher and lower charge states. The top and bottom rows represent the solar wind before and after the anomaly occurred, respectively. The first column displays the distribution of A_He in AR solar wind with Q_Fe greater and less than 11, before and after the anomaly. The blue bars represent AR solar wind with Q_Fe less than 11. The red bars represent AR wind with Q_Fe greater than 11. The vertical dotted blue and red lines represent the median A_He of them. The second column shows the CDF curves of A_He in AR solar wind with Q_Fe above and below 11. The vertical dotted black line marks the maximum vertical deviation between the two curves. D represents the maximum deviation value. The third column shows the distribution of A_He in AR solar wind with O⁷⁺/O⁶⁺ above and below 0.5, before and after the anomaly. The blue bar represents O⁷⁺/O⁶⁺ less than 0.5, and the red bar represents AR wind with O⁷⁺/O⁶⁺ greater than 0.5. The fourth column displays the CDF curves of A_He in AR solar wind with O⁷⁺/O⁶⁺ above and below 0.5.